U.S. patent application number 16/991030 was filed with the patent office on 2022-02-17 for rod piece connection device, and bicycle frame and tandem bicycle frame having the same.
The applicant listed for this patent is IDEAL BIKE CORPORATION. Invention is credited to LENNART PIETER MIDDEL.
Application Number | 20220048590 16/991030 |
Document ID | / |
Family ID | 1000005049082 |
Filed Date | 2022-02-17 |
United States Patent
Application |
20220048590 |
Kind Code |
A1 |
MIDDEL; LENNART PIETER |
February 17, 2022 |
ROD PIECE CONNECTION DEVICE, AND BICYCLE FRAME AND TANDEM BICYCLE
FRAME HAVING THE SAME
Abstract
A rod piece connection device, comprising: a first connection
piece and a second connection piece. The first connection piece
includes a first rod piece connection end and a first joggle joint
end opposite to the first rod piece connection end. Wherein, the
first joggle joint end includes a protrusion head tongue portion
and a neck portion. The second connection piece includes a second
rod piece connection end and a second joggle joint end opposite to
the second rod piece connection end. The second joggle joint end is
located corresponding to the first joggle joint end for them to
form into a joggle joint. The second joggle joint end includes a
protrusion bottom groove portion and a pillow portion. Wherein the
protrusion head tongue portion is disposed corresponding into the
protrusion bottom groove portion, and the neck portion is located
corresponding to the pillow portion.
Inventors: |
MIDDEL; LENNART PIETER;
(Rotterdam, NL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
IDEAL BIKE CORPORATION |
TAICHUNG CITY |
|
TW |
|
|
Family ID: |
1000005049082 |
Appl. No.: |
16/991030 |
Filed: |
August 12, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B62K 3/14 20130101; B62K
19/06 20130101; B62K 19/28 20130101 |
International
Class: |
B62K 19/28 20060101
B62K019/28; B62K 19/06 20060101 B62K019/06; B62K 3/14 20060101
B62K003/14 |
Claims
1. A rod piece connection device, comprising: a first connection
piece, that includes a first rod piece connection end and a first
joggle joint end opposite to the first rod piece connection end,
wherein, the first joggle joint end includes a protrusion head
tongue portion and a neck portion; and a second connection piece,
that includes a second rod piece connection end and a second joggle
joint end opposite to the second rod piece connection end, the
second joggle joint end is located corresponding to the first
joggle joint end for them to form into a joggle joint, the second
joggle joint end includes a protrusion bottom groove portion and a
pillow portion, wherein the protrusion head tongue portion is
disposed corresponding to and into the protrusion bottom groove
portion, and the neck portion is located corresponding to the
pillow portion.
2. The rod piece connection device as claimed in claim 1, wherein
the first connection piece and the second connection piece are
connected to each other coaxially in a radial direction.
3. The rod piece connection device as claimed in claim 2, wherein
the first joggle joint end includes: a position restricting
protrusion block disposed on an end face of the protrusion head
tongue portion in protrusion along an axial direction of the first
connection piece; and the second joggle joint end includes: a
position restricting indent groove disposed on a side face indented
in the protrusion bottom groove portion along an axial direction of
the second connection piece; when the second joggle joint end and
the first joggle joint end are connected to each other in a radial
direction to form into a joggle joint, the position restricting
protrusion block and the position restricting indent groove are
connected to each other in matching, and the end face of the
protrusion head tongue portion is in contact with the side face of
the protrusion bottom groove portion.
4. The rod piece connection device as claimed in claim 3, wherein
in an axial direction of the first connection piece, the protrusion
head tongue portion is disposed between the position restricting
protrusion block and the neck portion; and in an axial direction of
the second connection piece, the protrusion bottom groove portion
is located between the position restricting indent groove and the
pillow portion.
5. The rod piece connection device as claimed in claim 1, wherein
in the axial direction of the first connection piece, the neck
portion is located close toward the first rod piece connection end,
the protrusion head tongue portion is disposed away from the first
rod piece connection end; and in the axial direction of the second
connection piece, the pillow portion is located away from the
second rod piece connection end, and the protrusion bottom groove
portion is located close toward the second rod piece connection
end.
6. The rod piece connection device as claimed in claim 3, wherein
in the axial direction of the first connection piece, the neck
portion is located close toward the first rod piece connection end,
the protrusion head tongue portion is disposed away from the first
rod piece connection end; and in the axial direction of the second
connection piece, the pillow portion is located away from the
second rod piece connection end, and the protrusion bottom groove
portion is located close toward the second rod piece connection
end.
7. The rod piece connection device as claimed in claim 2, wherein
when the second joggle joint end and the first joggle joint end are
connected to each other in a radial direction to form into a joggle
joint, the protrusion head tongue portion and the protrusion bottom
groove portion are connected to each other in matching, and the
neck portion and the pillow portion are connected to each other in
matching.
8. The rod piece connection device as claimed in claim 1, wherein
the protrusion head tongue portion is provided with a first region
on a first radial plane of the first joggle joint end; and the neck
portion is provided with a second region on second radial plane of
first joggle joint end, the first radial plane is parallel to the
second radial plane, the first region of the protrusion head tongue
portion is configured to cover the second region of the neck
portion.
9. The rod piece connection device as claimed in claim 8, wherein
in the first region is provided with a first arc on a protrusion
tongue position of the protrusion head tongue portion; and in the
second region is provided with a second arc on a protrusion end
position of the neck portion, the first arc is not less than the
second arc.
10. The rod piece connection device as claimed in claim 1, wherein
the protrusion bottom groove portion is provided with a third
region on a third radial plane of the second joggle joint end; and
the pillow portion is provided with a fourth region on a fourth
radial plane of second joggle joint end, the third radial plane is
parallel to the fourth radial plane, the fourth region of the
pillow portion is configured to cover the third region of the
protrusion bottom groove portion.
11. The rod piece connection device as claimed in claim 8, wherein
the protrusion bottom groove portion is provided with a third
region on a third radial plane of the second joggle joint end; and
the pillow portion is provided with a fourth region on a fourth
radial plane of second joggle joint end, the third radial plane is
parallel to the fourth radial plane, the fourth region of the
pillow portion is configured to cover the third region of the
protrusion bottom groove portion.
12. The rod piece connection device as claimed in claim 10, wherein
in the third region is provided with a third arc on a protrusion
bottom position of the protrusion bottom groove portion; and in the
fourth region is provided with a fourth arc on a indent bottom
position of the pillow portion, the third arc is not less than the
fourth arc.
13. The rod piece connection device as claimed in claim 12, wherein
the first arc is equal to the third arc, and the second arc is
equal to the fourth arc.
14. The rod piece connection device as claimed in claim 1, wherein
the protrusion head tongue portion is provided with a first slant
leaning face and a second slant leaning face, connected to each
other in an axial direction of the first joggle joint end; the
protrusion bottom groove portion is provided with a third slant
leaning face and a fourth slant leaning face, connected to each
other in an axial direction of the second joggle joint end; when
the first joggle joint end and the second joggle joint end are
connected to each other to form into a joggle joint, the first
slant leaning face is in contact with the third slant leaning face,
the second slant leaning face is in contact with the fourth slant
leaning face, to act against a bending force in a first direction
and a retraction force in the axial direction, the bending force in
the first direction is perpendicular to an axial direction of the
first joggle joint end and the second joggle joint end, the
retraction force in the axial direction is parallel to or is
connected coaxially to the axial direction of the first joggle
joint end and the second joggle joint end.
15. The rod piece connection device as claimed in claim 14, wherein
in an axial direction of the second joggle joint end, the pillow
portion is provided with a curved cladding face, in the axial
direction of the first joggle joint end, the neck portion is
provided with a curved cladded face; when the first joggle joint
end and the second joggle joint end are connected to each other to
form into a joggle joint, the curved cladding face and the curved
cladded face are in contact with each other, to act against the
bending force in a second direction and the retraction force in the
axial direction, the bending force in the second direction is
perpendicular to the axial direction of the first joggle joint end
and the second joggle joint end, and the bending force in the
second direction is perpendicular to the bending force in the first
direction.
16. A bicycle frame, comprising: a head tube, connected to a faucet
and a front fork; a seat tube, connected to a saddle, a pedal
driving component, a rear upper fork, a rear lower fork; a
plurality of rod piece connection devices; an upper tube, with its
two ends connected to the head tube and a seat tube respectively,
wherein at least one of the head tube and the seat tube is
connected to the upper tube through using at least one of the rod
piece connection devices; and a lower tube, with its two ends
connected to the head tube and the seat tube respectively, wherein
at least one of the head tube and the seat tube is connected to the
lower tube through using at least one of the rod piece connection
devices.
17. A tandem bicycle frame, comprising: a head tube, connected to a
faucet and a front fork; a first seat tube, connected to a first
saddle, and a first pedal driving component, wherein the head tube
and the first seat tube are connected to each other by using at
least a front upper tube and a front lower tube connected in
between; a second seat tube, connected to a second saddle, and a
second pedal driving component, a rear upper fork, and a rear lower
fork; a plurality of rod piece connection devices; an upper
connection tube, with its two ends connected to the first seat tube
and the second seat tube respectively, wherein at least one of the
first seat tube and the second seat tube is connected to the upper
connection tube through using at least one of the rod piece
connection devices; and a lower connection tube, with its two ends
connected to the first seat tube and the second seat tube
respectively, wherein at least one of the first seat tube and the
second seat tube is connected to the lower connection tube through
using at least one of the rod piece connection devices.
18. The tandem bicycle frame as claimed in claim 17, further
comprising: a middle connection tube, with its two ends connected
to the first seat tube and the second seat tube respectively, and
the middle connection tube is disposed between the upper connection
tube and the lower connection tube, wherein at least one of the
first seat tube and the second seat tube is connected to the middle
connection tube through using at least one of the rod piece
connection devices.
19. The tandem bicycle frame as claimed in claim 17, wherein the
head tube and the first seat tube are connected through using a
front upper tube, a front middle tube, and a front lower tube, and
the front middle tube is disposed between the front upper tube and
the front lower tube.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The preferred embodiment of the present invention relates to
a rod piece connection device, and in particular to a rod piece
connection device used in a bicycle frame or a tandem bicycle
frame.
The Prior Arts
[0002] In recent years, due to the draining and depletion of the
fossil fuel resources, the oil price has increased rapidly. And
along with the rise of environmental awareness, now people in the
city tend to use bicycle as a means of transportation for
convenience and prevention of air pollution. On the other hand,
along with the economic growth and population increase in the city,
in a crowded city, traffic congestion has become a serious problem,
and it is rather difficult to find a parking space for a vehicle.
Therefore, for people now living and working in a city, bicycle is
a useful and convenient means of transportation.
[0003] However, for a conventional bicycle, the frame of bicycle is
built into one piece of integral body through welding and fixing,
and it has a rather long and narrow contour. Due to its size and
shape, it is rather difficult to place a bicycle in the house for
parking or put into a vehicle for transportation, for it occupies
too much space. For this reason, a folding bicycle frame is
developed to overcome the deficiencies mentioned above.
[0004] For the folding bicycle frame of the existing technology,
hinges and fasteners are placed between an upper tube and a lower
tube, to form into a bending structure that is easy to detach and
unfold. In order to raise the structure strength of the folding
bicycle frame, presently, quite a lot of reinforced materials and
reinforced components are required to use, to ensure its safety in
operation. However, in this way, the overall weight of the folding
bicycle frame is increased, to add burden to the user, and cause
inconvenience to the user in transportation.
[0005] Therefore, presently, the design and performance of the
bicycle frame is not quite satisfactory, and it leaves much room
for improvement.
SUMMARY OF THE INVENTION
[0006] In view of the problems and drawbacks of the prior art, the
preferred embodiment of the present invention provides a rod piece
connection device and a bicycle frame or a tandem bicycle frame
having the same, to solve the shortcomings of the prior art.
[0007] The objective of the present invention is to provide a rod
piece connection device, adapted to be the rod pieces of a bicycle
frame, and through the attaching and detaching of the corresponding
first connection piece and the second connection piece that are
detachable, the rod pieces of the bicycle frame can be assembled or
detached depending on the actual requirement, to reduce the volume
of the bicycle frame and thus the space it occupies. In addition,
the rod piece connection device provided by the present invention
is able to achieve joggle joint, thus reducing the additional
weight caused by the hinges and fasteners of the conventional
folding bicycle frame, providing convenience of shipping and moving
the bicycle, while reducing the burden of the user during its
carriage.
[0008] In order to achieve the objective mentioned above, the
present invention provides a rod piece connection device, that
includes a first connection piece, and a second connection piece.
The first connection piece includes a first rod piece connection
end and a first joggle joint end opposite to the first rod piece
connection end. Wherein, the first joggle joint end includes a
protrusion head tongue portion and a neck portion. The second
connection piece includes a second rod piece connection end and a
second joggle joint end opposite to the second rod piece connection
end, the second joggle joint end is located corresponding to the
first joggle joint end for them to form into a joggle joint. The
second joggle joint end includes a protrusion bottom groove portion
and a pillow portion. Wherein the protrusion head tongue portion is
disposed corresponding to and into the protrusion bottom groove
portion, and the neck portion is located corresponding to the
pillow portion.
[0009] The present invention further provides a bicycle frame, that
includes a head tube a seat tube, a plurality of rod piece
connection devices, an upper tube, and a lower tube. The head tube
is connected to a faucet and a front fork; and the seat tube is
connected to a saddle (also referred to as seat pad), a pedal
driving component, a rear upper fork, a rear lower fork. The upper
tube has its two ends connected to the head tube and a seat tube
respectively. Wherein at least one of the head tube and the seat
tube is connected to the upper tube through using at least one of
the rod piece connection devices. The lower tube has its two ends
connected to the head tube and the seat tube respectively. Wherein
at least one of the head tube and the seat tube is connected to the
lower tube through using at least one of the rod piece connection
devices.
[0010] The present invention further provides a tandem bicycle
frame, that includes a head tube, a first seat tube, a second seat
tube, a plurality of rod piece connection devices, an upper
connection tube, and a lower connection tube. The head tube is
connected to a faucet and a front fork; the first seat tube is
connected to a first saddle, and a first pedal driving component.
Wherein the head tube and the first seat tube are connected through
using at least a front upper tube and a front lower tube in
between. The second seat tube is connected to a second saddle, and
a second pedal driving component, a rear upper fork, and a rear
lower fork. The upper connection tube has its two ends connected to
the first seat tube and the second seat tube respectively. Wherein,
at least one of the first seat tube and the second seat tube is
connected to the upper connection tube through using at least one
of the rod piece connection devices. The lower connection tube has
its two ends connected to the first seat tube and the second seat
tube respectively. Wherein at least one of the first seat tube and
the second seat tube is connected to the lower connection tube
through using at least one of the rod piece connection devices.
[0011] The advantage of the present invention is that, the rod
piece connection device can be used as a rod piece in a bicycle
frame, and through attaching and detaching of the corresponding
first connection piece and the second connection piece that are
detachable, the rod pieces of the bicycle frame can be assembled or
detached depending on the actual requirement, to reduce the volume
of the bicycle frame and thus the space it occupies. In addition,
the rod piece connection device provided by the present invention
is able to achieve joggle joint, thus reducing the additional
weight caused by the hinges and fasteners of the conventional
folding bicycle frame, providing convenience of shipping and moving
the bicycle, while reducing the burden of the user during its
carriage. Further, in the present invention, since the hinges and
fasteners of the conventional folding bicycle are omitted,
therefore, the rod piece connection device and the bicycle frame
thus produced could have a compact, neat, and clean outer
appearance in achieving better aesthetical effect.
[0012] Further scope of the applicability of the present invention
and embodiments thereof will become apparent from the detailed
descriptions given hereinafter. However, it should be understood
that the detailed descriptions and specific examples, while
indicating preferred embodiments of the present invention, are
given by way of illustration only, since various changes and
modifications within the spirit and scope of the present invention
will become apparent to those skilled in the art from this detailed
descriptions.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Embodiments of the present invention are described below, by
way of example only, with reference to the accompanying drawings in
which:
[0014] FIG. 1 is a perspective view of a rod piece connection
device according to the present invention;
[0015] FIG. 2 is a side view of a rod piece connection device as
shown in FIG. 1 according to the present invention;
[0016] FIG. 3 is a cross section view of a rod piece connection
device along a 3-3 direction as shown in FIG. 2 according to the
present invention;
[0017] FIG. 4 is another side view of a rod piece connection device
as shown in FIG. 1 according to the present invention;
[0018] FIG. 5 is a cross section view of a rod piece connection
device along a 5-5 direction as shown in FIG. 4 according to the
present invention;
[0019] FIG. 6 is a cross section view of a rod piece connection
device along a 6-6 direction as shown in FIG. 4 according to the
present invention;
[0020] FIG. 7A is an exploded view of a rod piece connection device
as shown in FIG. 1 according to the present invention;
[0021] FIG. 7B is another exploded view of a rod piece connection
device as shown in FIG. 1 according to the present invention;
[0022] FIG. 8 is a side view of a first connection piece of the rod
piece connection device as shown in FIG. 1 according to the present
invention;
[0023] FIG. 9 is an end view of a first connection piece as shown
in FIG. 8 according to the present invention;
[0024] FIG. 10 is an end view of a second connection piece of the
rod piece connection device as shown in FIG. 7 according to the
present invention;
[0025] FIG. 11 is a perspective view of a second connection piece
as shown in FIG. 7 according to the present invention;
[0026] FIG. 12 is a perspective view of a first connection piece as
shown in FIG. 7 according to the present invention;
[0027] FIG. 13 is a perspective view of a bicycle frame according
to an embodiment of the present invention;
[0028] FIG. 14 is a partial exploded view of a bicycle frame as
shown in FIG. 13 according to the present invention;
[0029] FIG. 15 is a perspective view of a tandem bicycle frame
according to another embodiment of the present invention; and
[0030] FIG. 16 is a partial exploded view of a tandem bicycle frame
as shown in FIG. 15 according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0031] The purpose, construction, features, functions and
advantages of the present invention and its embodiments can be
appreciated and understood more thoroughly through the following
detailed descriptions with reference to the attached drawings.
[0032] Refer to FIGS. 1 to 12 respectively for detail descriptions
of the rod piece connection device according to the present
invention.
[0033] The embodiment of the present invention provides a rod piece
connection device 1, that includes a first connection piece 10 and
a second connection piece 20. The first connection piece 10
includes a first rod piece connection end 12 and a first joggle
joint end 14, the first joggle joint end 14 is located opposite to
the first rod piece connection end 12. In an embodiment of the
present invention, the first joggle joint end 14 includes a
protrusion head tongue portion 142 and a neck portion 144.
[0034] The second connection piece 20 includes a second rod piece
connection end 22 and a second joggle joint end 24. The first
connection piece 10 and the second connection piece 20 are
connected coaxially together through radial connection. The second
joggle joint end 24 is located opposite to the second rod piece
connection end 22. In an embodiment of the invention, the second
joggle joint end 24 is located corresponding to the first joggle
joint end 14 to form together into a joggle joint. The second
joggle joint end 24 includes a protrusion bottom groove portion 242
and a pillow portion 244. Wherein the protrusion head tongue
portion 142 is disposed corresponding to and into the protrusion
bottom groove portion 242, and the neck portion 144 is located
corresponding to the pillow portion 244. In the present embodiment,
the first joggle joint end 14 and the second joggle joint end 24
are formed into a tight joggle joint together, but first joggle
joint end 14 is not symmetric to the second joggle joint end 24. To
be more specific, the structure and shape of the first joggle joint
end 14 are quite different from those of the second joggle joint
end 24.
[0035] In an embodiment of the present invention, the first joggle
joint end 14 includes a position restricting protrusion block 146,
and is disposed on the end face 1422 of the protrusion head tongue
portion 142 in protrusion along the axial direction AX of the first
connection piece 10. The second joggle joint end 24 includes a
position restricting indent groove 246 and is disposed indent into
the side face 2422 of the protrusion bottom groove portion 242,
along the axial direction AX of the second connection piece 20. In
an embodiment of the present invention, when the second joggle
joint end 24 and the first joggle joint end 14 are connected to
each other to form into a joggle joint, the position restricting
protrusion block 146 and the position restricting indent groove 246
are connected to each other in matching, and the end face 1422 of
the protrusion head tongue portion 142 is in contact with the side
face 2422 of the protrusion bottom groove portion 242. In an
embodiment of the present invention, through matching and
connection of the position restricting protrusion block 146 to the
position restricting indent groove 246, the first joggle joint end
14 and the second joggle joint end 24 are not able to make relative
rotations to each other, to prevent the relative rotation
dislocations between the first connection piece 10 and the second
connection piece 20, in achieving enhanced connection and stability
between the first joggle joint end 14 and the second joggle joint
end 24.
[0036] In an axial direction AX of the first connection piece 10,
the protrusion head tongue portion 142 is disposed between the
position restricting protrusion block 146 and the neck portion 144.
In an embodiment of the present invention, and in an axial
direction AX of the second connection piece 20, the protrusion
bottom groove portion 242 is located between the position
restricting indent groove 246 and the pillow portion 244.
[0037] In the axial direction AX of the first connection piece 10,
the neck portion 144 is located close to the first rod piece
connection end 12, and the protrusion head tongue portion 142 is
located away from the first rod piece connection end 12. In an
embodiment of the present invention, in the axial direction AX of
the second connection piece 20, the pillow portion 244 is disposed
away from the second rod piece connection end 22, and the
protrusion bottom groove portion 242 is located close to the second
rod piece connection end 22.
[0038] In an embodiment of the present invention, when the second
joggle joint end 24 and the first joggle joint end 14 are connected
to each other in a radial direction to form into a joggle joint,
the protrusion head tongue portion 142 and the protrusion bottom
groove portion 242 are connected to each other in matching, and the
neck portion 144 and the pillow portion 244 are connected to each
other in matching.
[0039] In an embodiment of the present invention, the protrusion
head tongue portion 142 is provided with a first region A1 on a
first radial plane RP1 of the first joggle joint end 14; and the
neck portion 144 is provided with a second region A2 on second
radial plane RP2 of first joggle joint end 14. In an embodiment of
the present invention, the first radial plane RP1 is parallel to
the second radial plane RP2, and the first region A1 of the
protrusion head tongue portion 142 is configured to cover the
second region A2 of the neck portion 144.
[0040] In the first region A1 is provided with a first arc C1 on a
protrusion tongue position 1424 of the protrusion head tongue
portion 142; and in the second region A2 is provided with a second
arc C2 on a protrusion end position 1444 of the neck portion 144.
In an embodiment of the present invention, the first arc C1 is
greater than or equal to the second arc. However, in practice, the
first arc C1 can be less than the second arc C2.
[0041] In an embodiment of the present invention, the protrusion
bottom groove portion 242 is provided with a third region A3 on a
third radial plane RP3 of the second joggle joint end 24; and the
pillow portion 244 is provided with a fourth region A4 on a fourth
radial plane RP4 of second joggle joint end 24. In an embodiment of
the present invention, the third radial plane RP3 is parallel to
the fourth radial plane RP4, the fourth region A4 of the pillow
portion 244 is configured to cover the third region A3 of the
protrusion bottom groove portion 242.
[0042] In the third region A3 is provided with a third arc C3 on a
protrusion bottom position 2424 of the protrusion bottom groove
portion 242; and in the fourth region A4 is provided with a fourth
arc C4 on a indent bottom position 2444 of the pillow portion 244.
In an embodiment of the present invention, the third arc C3 is
equal to or greater than the fourth arc C4. However, in practice,
the third arc C3 can be less than the second arc C4.
[0043] In an embodiment of the present invention, the first arc C1
is equal to the third arc C3, and the second arc C2 is equal to the
fourth arc C4, so that the first joggle joint end 14 and the second
joggle joint end 24 could be connected to form into a tight joggle
joint.
[0044] In an embodiment of the present invention, the protrusion
head tongue portion 142 is provided with a first slant leaning face
1426 and a second slant leaning face 1428, and are connected to
each other in an axial direction AX of the first joggle joint end
14. The protrusion bottom groove portion 242 is provided with a
third slant leaning face 2426 and a fourth slant leaning face 2428,
connected to each other in an axial direction AX of the second
joggle joint end 24. In an embodiment of the present invention,
when the first joggle joint end 14 and the second joggle joint end
24 are connected to each other to form into a joggle joint, the
first slant leaning face 1426 is in contact with the third slant
leaning face 2426, the second slant leaning face 1428 is in contact
with the fourth slant leaning face 2428, to act against a bending
force in a first direction D1 and a retraction force in an axial
direction AX. In an embodiment of the present invention, the
bending force in the first direction D1 is perpendicular to an
axial direction AX of the first joggle joint end 14 and the second
joggle joint end 24, the retraction force in the axial direction AX
is parallel to or connected coaxially to the axial direction AX of
the first joggle joint end 14 and the second joggle joint end
24.
[0045] In an axial direction AX of the second joggle joint end 24,
the pillow portion 244 is provided with a curved cladding face
2442. In the axial direction AX of the first joggle joint end 14,
the neck portion 144 is provided with a curved cladded face 1442.
In an embodiment of the present invention, when the first joggle
joint end 14 and the second joggle joint end 24 are connected to
each other to form into a joggle joint, the curved cladding face
2442 and the curved cladded face 1442 are in contact with each
other, to act against the bending force in a second direction D2
and the retraction force in the axial direction AX. In an
embodiment of the present invention, the bending force in the
second direction D2 is perpendicular to the axial direction AX of
the first joggle joint end 14 and the second joggle joint end 24,
and the bending force in the second direction D2 is perpendicular
to the bending force in the first direction D1.
[0046] In an embodiment of the present invention, the first joggle
joint end 14 is provided with a first screw hole 141, and the
second joggle joint end 24 is provided with a second screw hole
241. When the first joggle joint end 14 and the second joggle joint
end 24 are connected to each other to form into a joggle joint, the
first screw hole 141 of the first joggle joint end 14, and the
second screw hole 241 of the second joggle joint end 24 are
connected and in communication with each other coaxially. In an
embodiment of the present invention, when the first joggle joint
end 14 and the second joggle joint end 24 are connected to each
other to form into a joggle joint, and the first screw hole 141 and
the second screw hole 241 are connected and in communication with
each other coaxially, a bolt (not shown) can be screwed into the
first screw hole 141 and the second screw hole 241, so that the
first connection piece 10 and the second connection piece 20 can be
connected securely to each other.
[0047] In an embodiment of the present invention, through the
protrusion head tongue portion 142 locating corresponding to and in
the protrusion bottom groove portion 242, the neck portion 144
locating corresponding to the pillow portion 244, and the position
restricting protrusion block 146 connecting the position
restricting indent groove 246 in matching, such that the first
joggle joint end 14 and the second joggle joint end 24 in the rod
piece connection device 1 are able to absorb the deformation force
(for example, bending force, rotation force, and dislocation
force), to reduce the deformation force on the bolt, and to raise
the deformation resistance strength and capability of the rod piece
connection device 1.
[0048] As shown in FIGS. 13 and 14, the bicycle frame 3 includes a
head tube 31, a seat tube 32, a rear upper fork 33, a rear lower
fork 34, an upper tube 35, a lower tube 36, and a plurality of rod
piece connection devices 1 mentioned above.
[0049] Further, as shown in FIGS. 13 and 14, the head tube 31 is
connected to a faucet (not shown) and a front fork (not shown). The
seat tube 32 is connected to a saddle (not shown), a pedal driving
component (not shown), a rear upper form 33 and a rear lower fork
34.
[0050] The two ends 352, 354 of the upper tube 35 are connected
respectively to the head tube 31, and the seat tube 32. In an
embodiment of the present invention, at least one of the head tube
31 and the seat tube 32 is connected to the upper tube by using at
least one of the rod piece connection devices 1. The two ends 362,
364 of the lower tube 36 are connected respectively to the head
tube 31 and the seat tube 32. In an embodiment of the present
invention, at least one of the head tube 31 and the seat tube 32 is
connected to the lower tube 36 by using at least one of the rod
piece connection devices 1.
[0051] By way of an example, when the rod piece connection device 1
is connected between the seat tube 32 and the upper tube 35, for
the rod piece connection device 1, one of the first connection
piece 10 and the second connection piece 20 is fixedly connected to
the seat tube 32, while the other one of the first connection piece
10 and the second connection piece 20 is connected fixedly to the
upper tube 35. In an embodiment of the present invention, the ways
of fixed connection may include welding, soldering, bolt-nut
connection, adhesive bonding, or a combination of the above, but
the present invention is not limited to this. In practice, any
means that is capable of connecting and fixing two objects together
can be used in the present invention.
[0052] As shown in FIGS. 15 and 16, a tandem bicycle frame 4
includes the following components: a head tube 41, a first seat
tube 42, a second seat tube 43, a rear upper fork 44, a rear lower
fork 45, an upper connection tube 46, a lower connection tube 47,
and a plurality of rod piece connection devices 1.
[0053] Further, as shown in FIGS. 15 and 16, the head tube 41 is
used to connect a faucet (not shown) and a front fork (not shown).
The first seat tube 42 is used to connect a first saddle (not
shown) and a first pedal driving component (not shown). In an
embodiment of the present invention, for connecting the head tube
41 to the first seat tube 42, at least a front upper tube 412 and a
front lower tube 414 are connected in between. The second seat tube
43 is used to connect the second saddle (not shown), a second pedal
driving component (not shown), a rear upper fork 44, and a rear
lower fork 45.
[0054] Two ends 462, 464 of the upper connection tube 46 are
connected respectively to the first seat tube 42 and a second seat
tube 43. In an embodiment of the present invention, at least one of
the first seat tube 42 and second seat tube 43 is connected to the
upper connection tube 46 by using at least one of the rod piece
connection devices 1. Two ends 472, 474 of the lower connection
tube 47 are connected respectively to the first seat tube 42 and a
second seat tube 43. In an embodiment of the present invention, at
least one of the first seat tube 42 and second seat tube 43 is
connected to the lower connection tube 47 by using at least one of
the rod piece connection devices 1.
[0055] By way of example, when the rod piece connection device 1 is
connected between the first seat tube 42 and the upper connection
tube 46, for the rod piece connection device 1, one of the first
connection piece 10 and the second connection piece 20 is fixedly
connected to the first seat tube 42, while the other of the two
pieces is connected fixedly to the upper connection tube 46. In an
embodiment of the present invention, the ways of fixed connections
may include welding, soldering, bolt-nut connection, adhesive
bonding, or a combination of the above, but the present invention
is not limited to this. In practice, any means that is capable of
fixing and connecting two objects together can be used in the
present invention.
[0056] In an embodiment of the present invention, the tandem
bicycle frame 4 further includes a middle connection tube 48. Two
ends 482, 484 of the middle connection tube 48 are connected
respectively to the first seat tube 42 and a second seat tube 43,
and the middle connection tube 48 is disposed between the upper
connection tube 46 and the lower connection tube 47. In an
embodiment of the present invention, at least one of the first seat
tube 42 and a second seat tube 43 is connected to the middle
connection tube 48 by using at least one of the rod piece
connection devices.
[0057] In an embodiment of the present invention, the head tube 41
and the first seat tube 42 are connected to each other through
connecting the front upper tube 412, the front middle tube 413 and
the front lower tube 414 in between. And the front middle tube 413
is disposed between the front upper tube 412 and the front lower
tube 414.
[0058] Through the design and structure mentioned above, the
present invention has the advantage in that, the rod piece
connection device can be used as a rod piece in a bicycle frame,
and through attaching and detaching of the corresponding first
connection piece and the second connection piece that are
detachable, the rod pieces of the bicycle frame can be assembled or
detached depending on the actual requirement, to reduce the volume
of the bicycle frame and thus the space it occupies. In addition,
the rod piece connection device provided by the present invention
is able to achieve joggle joint, thus reducing the additional
weight caused by the hinges and fasteners of the conventional
folding bicycle frame, providing convenience of shipping and moving
the bicycle, while reducing the burden of the user during its
carriage. Further, in the present invention, since the hinges and
fasteners of the conventional folding bicycle are omitted,
therefore, the rod piece connection device and the bicycle frame
thus produced could have a compact, neat, and clean outer
appearance, in achieving better aesthetical effect.
[0059] The above detailed description of the preferred embodiment
is intended to describe more clearly the characteristics and spirit
of the present invention. However, the preferred embodiments
disclosed above are not intended to be any restrictions to the
scope of the present invention. Conversely, its purpose is to
include the various changes and equivalent arrangements which are
within the scope of the appended claims.
* * * * *